In an electroluminescence display apparatus and a driving method of an electroluminescence display apparatus, the electroluminescence display apparatus includes a pixel connected to a data line and a reference voltage line, the pixel including a driving element configured to generate a driving current based on a sensing data voltage supplied through the data line and a reference voltage supplied through the reference voltage line, and a level of the driving current being proportional to a level of the sensing data voltage, a comparison and tracking circuit configured to previously determine a target current range between a reference low current and a reference high current and change current tracking data for adjusting a level of the sensing data voltage until the driving current input through the reference voltage line is within the target current range, and a digital-to-analog converter configured to adjust a level of the sensing data voltage so as to be proportional to a size of the current tracking data and supply the level-adjusted sensing data voltage to the data line.
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2. The electroluminescence display apparatus of claim 1, wherein, when the driving current having a first value is within the target current range, the comparison and tracking circuit stops an operation of changing the current tracking data and calculates a threshold voltage of the driving element based on the driving current having the first value.
4. The electroluminescence display apparatus of claim 3, wherein, when the logic value of the first comparison result signal differs from the logic value of the second comparison result signal, the logic circuit outputs one of a down control signal and an up control signal as the data adjustment signal, and when the logic value of the first comparison result signal is the same as the logic value of the second comparison result signal, the logic circuit outputs a hold control signal as the data adjustment signal.
14. The driving method of claim 13, further comprising, when the driving current having a first value is within the target current range, stopping an operation of changing the current tracking data and calculating a threshold voltage of the driving element based on the driving current having the first value.
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May 13, 2022
January 17, 2023
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